JPH083436Y2 - Thrust bearing device for screw rod in pantograph type jack - Google Patents
Thrust bearing device for screw rod in pantograph type jackInfo
- Publication number
- JPH083436Y2 JPH083436Y2 JP1990002386U JP238690U JPH083436Y2 JP H083436 Y2 JPH083436 Y2 JP H083436Y2 JP 1990002386 U JP1990002386 U JP 1990002386U JP 238690 U JP238690 U JP 238690U JP H083436 Y2 JPH083436 Y2 JP H083436Y2
- Authority
- JP
- Japan
- Prior art keywords
- screw rod
- bearing
- thrust
- threaded rod
- thrust bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 この考案はジャッキ、特にパンタグラフ型ジャッキに
おけるねじ棒の後端部を支承するスラスト軸受け装置に
関する。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a thrust bearing device for supporting a rear end portion of a screw rod in a jack, particularly a pantograph type jack.
従来の技術 従来、パンタグラフ型ジャッキのねじ棒後部を支承す
る軸受けの軸受孔は、ねじ棒の軸部外径に適合する内径
に形成し、且つその軸受孔の内径も当然仕上加工を施す
ものである。Conventional technology Conventionally, the bearing hole of the bearing that supports the rear part of the screw rod of the pantograph type jack is formed to have an inner diameter that matches the outer diameter of the shaft portion of the screw rod, and the inner diameter of the bearing hole is naturally finished. is there.
考案が解決しようとする課題 従来の技術で述べたように、従来のねじ棒後部を支承
する軸受けの軸受孔は、ねじ棒の軸部外径に適合する内
径に形成し、且つその軸受孔の内径も当然仕上加工を施
すようにしているため、製作の工数が多く、特に仕上加
工を施すため製作加工費がそれだけ割高となり、その上
ジャッキの組立に手数が多くなる不便がある。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As described in the related art, the bearing hole of the bearing that supports the rear portion of the conventional screw rod is formed to have an inner diameter that matches the outer diameter of the shaft portion of the screw rod, and Since the inner diameter is naturally subjected to finishing processing, the number of manufacturing steps is large, and the manufacturing processing cost is particularly high due to the finishing processing, and in addition, there is the inconvenience of increasing the number of steps for assembling the jack.
また、近年ねじ棒は丸棒から切削加工をなして製造す
るのではなく、鍛造により製造するから、ねじ部の外径
がねじのない軸部の外径より大きくなる。そこで、スラ
スト受け端の鍔加工、ハンドル連結金などはメタルに嵌
挿した後でないと設けることができなくコスト高を招い
ていた。Further, in recent years, since the threaded rod is manufactured by forging rather than being manufactured by cutting the round bar, the outer diameter of the threaded portion is larger than the outer diameter of the shaft portion without the screw. Therefore, the collar processing of the thrust receiving end, the handle connecting metal, and the like can be provided only after they are fitted into the metal, which causes a high cost.
この考案は前記従来技術による問題点に鑑みなされた
ものであり、その目的とするところは、製作上の加工手
数を簡易化し、且つ組立工数も簡単化し、ジャッキの生
産費を節減するにある。The present invention has been made in view of the above problems of the prior art, and an object thereof is to simplify the number of manufacturing processes and the number of assembling steps and reduce the production cost of the jack.
課題を解決するための手段 上記の目的を達成するため、この考案のパンタグラフ
型ジャッキにおけるねじ棒のスラスト軸受け装置は、ね
じ棒の後部を支承するスラスト軸受けの軸受孔内径を、
ねじ棒のねじ山部外径より大径に形成し、且つ軸受孔の
後端側孔縁に、ねじ棒上に装着した座金重合スラスト金
具の端面に適合する凹陥係合連接部を設け、このスラス
ト軸受けの軸受孔の前端側孔縁に、ねじ棒上に装着した
管状スラスト金具の端面に連接する連接部を設けたこと
を特徴とするものにある。Means for Solving the Problems In order to achieve the above object, a thrust bearing device for a screw rod in a pantograph-type jack of the present invention has a bearing hole inner diameter of a thrust bearing that supports a rear portion of the screw rod,
The threaded portion of the threaded rod is formed to have a diameter larger than the outer diameter of the threaded portion. It is characterized in that a connecting portion, which is connected to the end surface of the tubular thrust fitting mounted on the screw rod, is provided at the hole edge on the front end side of the bearing hole of the thrust bearing.
作用 この考案の構成は、前述のように構成されるものであ
るから、ねじ棒の後端側を支承するスラスト軸受けは、
ジャッキの組立の際、予め上下アームの後部側基端を連
結しておくことができ、その軸受けの軸受孔をねじ棒の
ねじ山部外径より大径に形成しているので、例えば、転
造により外周にねじを形成すると軸径よりねじ径が大径
となり、このねじを軸受けの軸受孔に嵌挿するため軸径
に対してはがたができる。しかし、軸受けに挿通された
ねじ棒は、軸受けの後端孔縁に設けた凹陥係合連接部に
ねじ棒上に装着された座金重合スラスト金具を適合させ
て保持されているから軸受けの中心軸線上に安定して保
持することができるのである。Action The configuration of the present invention is configured as described above. Therefore, the thrust bearing that supports the rear end side of the screw rod is
When assembling the jack, the rear base ends of the upper and lower arms can be connected in advance, and the bearing hole of the bearing is formed larger than the outer diameter of the thread portion of the screw rod. When a screw is formed on the outer circumference by manufacturing, the screw diameter becomes larger than the shaft diameter, and since the screw is inserted into the bearing hole of the bearing, it can be peeled off from the shaft diameter. However, since the threaded rod inserted in the bearing is held by fitting the washer polymerization thrust metal fitting mounted on the threaded rod to the recessed engagement connecting portion provided on the edge of the rear end hole of the bearing, the central axis of the bearing is retained. It can be held stably on the line.
実施例 以下この考案の実施例について図面を参照して説明す
る。ねじ棒１の後部を支承する軸受け２は、上下アーム
3,4の後端側を連結する連結軸を兼ねるものにして、ね
じ棒１を挿通する軸受け孔５の内径は、ねじ棒１のねじ
山部外径６と同径、又は大径に形成され、挿通可能に設
けている。Embodiment An embodiment of the present invention will be described below with reference to the drawings. The bearing 2 supporting the rear part of the screw rod 1 is an upper and lower arm.
The inner diameter of the bearing hole 5 through which the threaded rod 1 is inserted is formed to be the same as or larger than the outer diameter 6 of the thread portion of the threaded rod 1 so as to also serve as a coupling shaft for coupling the rear end sides of the 3, 4 It is provided so that it can be inserted.
軸受孔５の外端にはねじ棒１の後端側に嵌装されたプ
ラスチック製を含む複数の座金を重合して構成される座
金重合スラスト金具７の前端面側が圧接される凹陥係合
連接部８が設けられ、また軸受け２の前面側ねじ棒上に
は、所要長さの管状に形成された管状スラスト金具９が
装着されている。ねじ棒１の後端には、回転用ハンドル
の連結金10が溶着加工により設けている。On the outer end of the bearing hole 5, a recessed engagement connection is formed in which the front end face side of a washer polymerization thrust metal fitting 7 formed by superposing a plurality of washers including plastics fitted on the rear end side of the screw rod 1 is pressed. A portion 8 is provided, and a tubular thrust fitting 9 formed in a tubular shape having a required length is mounted on the front side threaded rod of the bearing 2. On the rear end of the screw rod 1, a connecting handle metal 10 for rotation is provided by welding.
考案の効果 この考案は上記のようにねじ棒を挿通する軸受けの軸
受孔の内径をねじ棒のねじ山部の外径より大径に形成し
ているので、ジャッキ組立の際、容易にねじ棒を挿通組
立ることができ、したがって組立が極めて簡単である。Effect of the Invention According to this invention, since the inner diameter of the bearing hole of the bearing through which the screw rod is inserted is formed to be larger than the outer diameter of the thread portion of the screw rod as described above, the screw rod can be easily assembled during jack assembly. Can be inserted and assembled, and therefore, the assembly is extremely simple.
また従来、軸受孔の内径をねじ棒の外径に適合するこ
とは、当然のことであり、その外径からねじ部の製作に
は、切削加工となるため手数を要し、これによって加工
費が割高となる不利があった。しかるに、軸受孔の内径
を上述のようにねじ山部の外径より大径にすれば、ねじ
棒を転造により設けることができ、またスラスト受け端
にスラスト受け鍔を形成するのにも、その後端を例えば
超音波鍛造等公知技術により簡易に設け、かつその外面
に連結金を溶着することができ、その連結金を溶着した
状態であっても、スラスト受け端側のメタルに挿通する
ことができ、ねじのない軸部がメタルの軸受孔に対応
し、ねじ棒と軸受孔にすき間があっても、メタルの凹陥
係合連接部に座金重合スラスト金具を嵌合すると、中心
がでて、特に荷重を受ける使用時には、ねじ棒により圧
接されるので、スラスト金具は凹陥係合連接部内にとど
まり、外れることがなく、ねじ棒の中心を維持するもの
であり、メタルの軸受孔をねじ棒の軸径に適合させて嵌
挿したときと同じ状態で回転させることができ、円滑な
扛重作業を行えるものである。In the past, it has been natural to match the inner diameter of the bearing hole with the outer diameter of the threaded rod, and manufacturing the threaded portion from that outer diameter requires machining because it requires cutting work. There was a disadvantage that it was expensive. However, if the inner diameter of the bearing hole is set to be larger than the outer diameter of the threaded portion as described above, the threaded rod can be provided by rolling, and also in forming the thrust receiving collar at the thrust receiving end, The rear end can be simply provided by a known technique such as ultrasonic forging, and the connecting metal can be welded to the outer surface thereof, and even if the connecting gold is welded, it must be inserted into the thrust receiving end side metal. Even if there is a gap between the threaded rod and the bearing hole because the shaft part without screws corresponds to the metal bearing hole and the washer polymerization thrust metal fitting is fitted to the recessed engagement connecting part of the metal, the center is opened. Since the thrust metal fitting is pressed into contact with the threaded rod during use under load, the thrust metal fitting stays in the concave engagement connecting part and does not come off, maintaining the center of the threaded rod. Adapted to the shaft diameter of It can be rotated in the same state as when the fitting inserted, in which can perform smooth 扛重 work.
よってねじ棒の製造が容易となり、また組立が便利な
ばかりか、孔の内径の仕上加工を省略することができ、
コスト低減に寄与するものである。Therefore, the manufacturing of the threaded rod is easy, and not only is the assembly convenient, but the finishing of the inner diameter of the hole can be omitted.
This contributes to cost reduction.
第１図はこの考案を実施したパンタグラフ型ジャッキに
おけるねじ棒のスラスト軸受け装置の概要説明図、第２
図は要部を断面で示す側面図、第３図は軸受けの正面
図、第４図は軸受けと、座金重合スラスト金具を示す説
明図である。 １…ねじ棒、２…軸受け、３…上アーム、４…下アー
ム、５…軸受孔、６…ねじ山部外径、７…座金重合スラ
スト金具、８…凹陥係合連接部、９…管状スラスト金
具、10…回転用ハンドルの連結金。FIG. 1 is a schematic explanatory view of a thrust bearing device for a screw rod in a pantograph-type jack embodying the present invention, and FIG.
FIG. 3 is a side view showing a cross section of a main part, FIG. 3 is a front view of a bearing, and FIG. 4 is an explanatory view showing a bearing and a washer polymerization thrust fitting. DESCRIPTION OF SYMBOLS 1 ... Screw rod, 2 ... Bearing, 3 ... Upper arm, 4 ... Lower arm, 5 ... Bearing hole, 6 ... Thread part outer diameter, 7 ... Washer polymerization thrust metal fitting, 8 ... Recessed engagement connection part, 9 ... Tubular shape Thrust metal fittings, 10 ... Rotating handle connecting metal.
Claims (1)
軸受孔内径を、ねじ棒のねじ山部外径より大径に形成
し、且つ軸受孔の後端側孔縁に、ねじ棒上に装着した座
金重合スラスト金具の端面に適合する凹陥係合連接部を
設け、このスラスト軸受けの軸受孔の前端側孔縁に、ね
じ棒上に装着した管状スラスト金具の端面に連接する連
接部を設けたことを特徴とする、パンタグラフ型ジャッ
キにおけるねじ棒のスラスト軸受け装置。1. A thrust bearing for supporting the rear portion of a threaded rod, wherein the inner diameter of the bearing hole is formed to be larger than the outer diameter of the thread portion of the threaded rod, and at the rear edge of the bearing hole, on the threaded rod. A recessed engagement connecting part that fits the end face of the washer polymerization thrust metal fitting that is installed is provided, and a connecting part that connects to the end surface of the tubular thrust metal fitting that is mounted on the screw rod is provided at the hole edge on the front end side of the bearing hole of this thrust bearing. A thrust bearing device for a screw rod in a pantograph-type jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990002386U JPH083436Y2 (en) | 1990-01-17 | 1990-01-17 | Thrust bearing device for screw rod in pantograph type jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990002386U JPH083436Y2 (en) | 1990-01-17 | 1990-01-17 | Thrust bearing device for screw rod in pantograph type jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0395390U JPH0395390U (en) | 1991-09-27 |
| JPH083436Y2 true JPH083436Y2 (en) | 1996-01-31 |
Family
ID=31506262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990002386U Expired - Lifetime JPH083436Y2 (en) | 1990-01-17 | 1990-01-17 | Thrust bearing device for screw rod in pantograph type jack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH083436Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4962894B2 (en) * | 2008-09-03 | 2012-06-27 | 直子 武田 | Clothes sleeves |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0444548Y2 (en) * | 1987-07-15 | 1992-10-20 |
-
1990
- 1990-01-17 JP JP1990002386U patent/JPH083436Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0395390U (en) | 1991-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |